Choose best answer 1. In a healthy, young adult, typical responses to exercise t
ID: 3524804 • Letter: C
Question
Choose best answer
1. In a healthy, young adult, typical responses to exercise training of the endurance type (i.e., relatively low intensity, long duration exercise), compared with the pretraining state, include the following:
a. Increase in the exercise intensity (i.e., power output) that elicits a blood lactic acid concentration of 4 mM.
b. No change in volume of mitochondria per gram of muscle tissue in trained skeletal muscles.
c. Increase in maximal rate at which the trained muscle fibers can generate ATP by anaerobic glycolysis.
d. Both A and C.
2. Factors that affect the amount of oxygen attached to hemoglobin in a sample of blood include the following:
a. partial pressure of oxygen in the sample
b. partial pressure of carbon dioxide in the sample
c. temperature of the sample
d. all of these
3. Regarding exercise-induced delayed muscle soreness, it is well-established that:
a. lactic acid is the pain stimulus
b. there is underlying muscle fiber damage
c. strength is reduced during at least part of the period of soreness
d. both b and c
True or False
4. In a person with normal pulmonary gas exchange and gas transport in the blood, breathing 100% oxygen will result in little (< 10%) additional oxygen attached to hemoglobin (compared with breathing normal atmosphere).
True
False
5. Heavy resistance weight training is more likely than endurance training to cause thickening of the left ventricular wall.
True
False
Explanation / Answer
1.Both A and C ,as in the endurance trainig regiem Increase in the intensity of an exercise which elicits a blood lactic acid concentration and gradual increase in the intensity of an exercise generate ATP by anarobic glycolysis.
2.All of the factors that is partial pressure of oxygen and co2 as well as temp. affects the affinity of the oxygen towards haemoglobin.
3.(b)In DOMS there is muscular damage there is no any involvement of lactic acid.